Move all core-functionality to subsurface-core

And adapt a new CMakeLists.txt file for it. On the way I've also
found out that we where double-compilling a few files. I've also
set the subsurface-core as a include_path but that was just to
reduce the noise on this commit, since I plan to remove it from
the include path to make it obligatory to specify something like

 include "subsurface-core/dive.h"

for the header files. Since the app is growing quite a bit we ended
up having a few different files with almost same name that did
similar things, I want to kill that (for instance Dive.h, dive.h,
PrintDive.h and such).

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

subsurface-core/CMakeLists.txt

@@ -0,0 +1,81 @@
+set(PLATFORM_SRC unknown_platform.c)
+if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+	set(PLATFORM_SRC linux.c)
+elseif(ANDROID)
+	set(PLATFORM_SRC android.cpp)
+elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+	set(PLATFORM_SRC macos.c)
+elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
+	set(PLATFORM_SRC windows.c)
+endif()
+
+if(FTDISUPPORT)
+	set(SERIAL_FTDI serial_ftdi.c)
+endif()
+
+if(BTSUPPORT)
+	add_definitions(-DBT_SUPPORT)
+	set(BT_SRC_FILES qt-ui/btdeviceselectiondialog.cpp)
+	set(BT_CORE_SRC_FILES qtserialbluetooth.cpp)
+endif()
+
+# compile the core library, in C.
+set(SUBSURFACE_CORE_LIB_SRCS
+	cochran.c
+	datatrak.c
+	deco.c
+	device.c
+	dive.c
+	divesite.c
+	divesite.cpp
+	divelist.c
+	equipment.c
+	file.c
+	git-access.c
+	libdivecomputer.c
+	liquivision.c
+	load-git.c
+	membuffer.c
+	ostctools.c
+	parse-xml.c
+	planner.c
+	profile.c
+	gaspressures.c
+	worldmap-save.c
+	save-git.c
+	save-xml.c
+	save-html.c
+	sha1.c
+	statistics.c
+	strtod.c
+	subsurfacestartup.c
+	time.c
+	uemis.c
+	uemis-downloader.c
+	version.c
+	# gettextfrommoc should be added because we are using it on the c-code.
+	gettextfromc.cpp
+	# dirk ported some core functionality to c++.
+	qthelper.cpp
+	divecomputer.cpp
+	exif.cpp
+	subsurfacesysinfo.cpp
+	devicedetails.cpp
+	configuredivecomputer.cpp
+	configuredivecomputerthreads.cpp
+	divesitehelpers.cpp
+	taxonomy.c
+	checkcloudconnection.cpp
+	windowtitleupdate.cpp
+	divelogexportlogic.cpp
+	qt-init.cpp
+	qtserialbluetooth.cpp
+	${SERIAL_FTDI}
+	${PLATFORM_SRC}
+	${BT_CORE_SRC_FILES}
+)
+source_group("Subsurface Core" FILES ${SUBSURFACE_CORE_LIB_SRCS})
+
+add_library(subsurface_corelib STATIC ${SUBSURFACE_CORE_LIB_SRCS} )
+target_link_libraries(subsurface_corelib ${QT_LIBRARIES})
+