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/cochran.h

@@ -0,0 +1,44 @@
+// Commander log fields
+#define CMD_SEC				1
+#define CMD_MIN				0
+#define CMD_HOUR			3
+#define CMD_DAY				2
+#define CMD_MON				5
+#define CMD_YEAR			4
+#define CME_START_OFFSET		6		// 4 bytes
+#define CMD_WATER_CONDUCTIVITY		25		// 1 byte, 0=low, 2=high
+#define CMD_START_SGC			42		// 2 bytes
+#define CMD_START_TEMP			45		// 1 byte, F
+#define CMD_START_DEPTH			56		// 2 bytes, /4=ft
+#define CMD_START_PSI			62
+#define CMD_SIT				68		// 2 bytes, minutes
+#define CMD_NUMBER			70		// 2 bytes
+#define CMD_ALTITUDE			73		// 1 byte, /4=Kilofeet
+#define CMD_END_OFFSET			128		// 4 bytes
+#define CMD_MIN_TEMP			153		// 1 byte, F
+#define CMD_BT				166		// 2 bytes, minutes
+#define CMD_MAX_DEPTH			168		// 2 bytes, /4=ft
+#define CMD_AVG_DEPTH			170		// 2 bytes, /4=ft
+#define CMD_O2_PERCENT			210		// 8 bytes, 4 x 2 byte, /256=%
+
+// EMC log fields
+#define EMC_SEC				0
+#define EMC_MIN				1
+#define EMC_HOUR			2
+#define EMC_DAY				3
+#define EMC_MON				4
+#define EMC_YEAR			5
+#define EMC_START_OFFSET		6		// 4 bytes
+#define EMC_WATER_CONDUCTIVITY		24		// 1 byte bits 0:1, 0=low, 2=high
+#define EMC_START_DEPTH			42		// 2 byte, /256=ft
+#define EMC_START_TEMP			55		// 1 byte, F
+#define EMC_SIT				84		// 2 bytes, minutes, LE
+#define EMC_NUMBER			86		// 2 bytes
+#define EMC_ALTITUDE			89		// 1 byte, /4=Kilofeet
+#define EMC_O2_PERCENT			144		// 20 bytes, 10 x 2 bytes, /256=%
+#define EMC_HE_PERCENT			164		// 20 bytes, 10 x 2 bytes, /256=%
+#define EMC_END_OFFSET			256		// 4 bytes
+#define EMC_MIN_TEMP			293		// 1 byte, F
+#define EMC_BT				304		// 2 bytes, minutes
+#define EMC_MAX_DEPTH			306		// 2 bytes, /4=ft
+#define EMC_AVG_DEPTH			310		// 2 bytes, /4=ft