Add files for general graphic buffer
Add basic buffer datatype
Add basic buffer initialisation
Add query functions
Add begin_access() and end_access()
Merge pull request #134 from neithernut/add-compositor-buffer

Add buffer type
Removed uneeded struct
Fixed header inclusion to point to corret file
Merge pull request #137 from TheNeikos/fix-buffer_typos

Fix buffer typos
Add string.c to CMakeLists.txt
Add ws_string interface

Add definitions for string.h
Add ws_string method stubs

Conflicts:
	src/objects/string.c
Add implementation for ws_string_init()
Add implementation for ws_string_new()
Add implementation for ws_string_len()
Add implementation of ws_string_cat
Add implementation of ws_string_multicat
Add implementation of ws_string_dupl
Add implementation of ws_string_cmp()
Add implementation of ws_string_ncmp()