Multiple improvements to build process

Restructure and document retroshare.pri variables and helper functions
Link sqlite statically like other libraries on Android
qmake has multiple win32-* specs match them correctly
Move a buch of generic thing to retroshare.pri instead of having them replocated
  accross project specific .pro
Fix retroshare-gui too many symbols exported on windows liking error by adding
  QMAKE_LFLAGS+=-Wl,--exclude-libs,ALL
Rename retroshare-gui/src/util/win32.h because the name is too prone to
  confusion and build conflicts
libreasapi avoid usage of cretar_prl link_prl that seems unreliable on some
  platforms
libreasapi rename LIBRESAPI_QT to more understendable LIBRESAPI_SETTINGS
Use use_*.pri instead of copy pasting error prone qmake snippets around
Expose bitdht option to retroshare.pri
Add RS_THREAD_LIB qmake variable for better crossplatform support
Move debug and profiling generic options to retroshare.pri (avoid copy/pasting)
Remove Qt script module in qmake as it is not available anymore

libresapi/src/api/ApiServer.cpp

@@ -17,7 +17,7 @@
 #include "ChannelsHandler.h"
 #include "StatsHandler.h"
 
-#ifdef LIBRESAPI_QT
+#ifdef LIBRESAPI_SETTINGS
     #include "SettingsHandler.h"
 #endif
 
@@ -242,7 +242,7 @@ public:
         mApiPluginHandler(sts, ifaces),
 	    mChannelsHandler(ifaces.mGxsChannels),
 	    mStatsHandler()
-#ifdef LIBRESAPI_QT
+#ifdef LIBRESAPI_SETTINGS
 	    ,mSettingsHandler(sts)
 #endif
     {
@@ -272,7 +272,7 @@ public:
                                   &ChannelsHandler::handleRequest);
 		router.addResourceHandler("stats", dynamic_cast<ResourceRouter*>(&mStatsHandler),
 		                          &StatsHandler::handleRequest);
-#ifdef LIBRESAPI_QT
+#ifdef LIBRESAPI_SETTINGS
 		router.addResourceHandler("settings", dynamic_cast<ResourceRouter*>(&mSettingsHandler),
 		                                  &SettingsHandler::handleRequest);
 #endif
@@ -290,7 +290,7 @@ public:
     ChannelsHandler mChannelsHandler;
 	StatsHandler mStatsHandler;
 
-#ifdef LIBRESAPI_QT
+#ifdef LIBRESAPI_SETTINGS
 	SettingsHandler mSettingsHandler;
 #endif
 };

libresapi/src/libresapi.pro

@@ -2,50 +2,29 @@
 
 TEMPLATE = lib
 CONFIG += staticlib
-CONFIG += create_prl
 CONFIG -= qt
 TARGET = resapi
 TARGET_PRL = libresapi
 DESTDIR = lib
 
-DEPENDPATH += ../../libretroshare/src/
-INCLUDEPATH += ../../libretroshare/src
+!include(use_libresapi.pri):error("Including")
 
+libresapilocalserver {
+    CONFIG *= qt
+    QT *= network
+    SOURCES *= api/ApiServerLocal.cpp
+    HEADERS *= api/ApiServerLocal.h
+}
 
-retroshare_android_service {
-    win32 {
-        OBJECTS_DIR = temp/obj
+libresapi_settings {
+    CONFIG *= qt
+    QT *= core
 
-        LIBS_DIR = $$PWD/../../libs/lib
-        LIBS += $$OUT_PWD/../../libretroshare/src/lib/libretroshare.a
-        LIBS += $$OUT_PWD/../../openpgpsdk/src/lib/libops.a
-
-        for(lib, LIB_DIR):LIBS += -L"$$lib"
-        for(bin, BIN_DIR):LIBS += -L"$$bin"
-
-
-        LIBS += -lssl -lcrypto -lpthread -lminiupnpc -lz -lws2_32
-        LIBS += -luuid -lole32 -liphlpapi -lcrypt32 -lgdi32
-        LIBS += -lwinmm
-
-        DEFINES *= WINDOWS_SYS WIN32_LEAN_AND_MEAN _USE_32BIT_TIME_T
-
-        DEPENDPATH += . $$INC_DIR
-        INCLUDEPATH += . $$INC_DIR
-
-        greaterThan(QT_MAJOR_VERSION, 4) {
-                # Qt 5
-                RC_INCLUDEPATH += $$_PRO_FILE_PWD_/../../libretroshare/src
-        } else {
-                # Qt 4
-                QMAKE_RC += --include-dir=$$_PRO_FILE_PWD_/../../libretroshare/src
-        }
-    }
+    SOURCES += api/SettingsHandler.cpp
+    HEADERS += api/SettingsHandler.h
 }
 
 libresapihttpserver {
-    CONFIG += libmicrohttpd
-
     unix {
 
         webui_files.path = "$${DATA_DIR}/webui"
@@ -211,18 +190,3 @@ HEADERS += \
     api/ChannelsHandler.h \
     api/StatsHandler.h \
     api/FileSharingHandler.h
-
-libresapilocalserver {
-    CONFIG *= qt
-    QT *= network
-    SOURCES *= api/ApiServerLocal.cpp
-    HEADERS *= api/ApiServerLocal.h
-}
-
-qt_dependencies {
-    CONFIG *= qt
-    QT *= core
-
-    SOURCES += api/SettingsHandler.cpp
-    HEADERS += api/SettingsHandler.h
-}

libresapi/src/use_libresapi.pri

@@ -0,0 +1,27 @@
+DEPENDPATH *= $$system_path($$clean_path($$PWD/../../libresapi/src))
+INCLUDEPATH  *= $$system_path($$clean_path($${PWD}/../../libresapi/src))
+LIBS *= -L$$system_path($$clean_path($${OUT_PWD}/../../libresapi/src/lib/)) -lresapi
+
+!equals(TARGET, resapi):PRE_TARGETDEPS *= $$system_path($$clean_path($${OUT_PWD}/../../libresapi/src/lib/libresapi.a))
+
+!include("../../libretroshare/src/use_libretroshare.pri"):error("Including")
+
+sLibs =
+mLibs =
+dLibs =
+
+libresapihttpserver {
+    mLibs *= microhttpd
+}
+
+static {
+    sLibs *= $$mLibs
+} else {
+    dLibs *= $$mLibs
+}
+
+LIBS += $$linkStaticLibs(sLibs)
+PRE_TARGETDEPS += $$pretargetStaticLibs(sLibs)
+
+LIBS += $$linkDynamicLibs(dLibs)
+