added bitmap allocator
added bitmap initialization based on Multiboot infos
added headers for paging code
added missing #define
fixed comment capitalization, style and indentions
enabled paging by using a transparent idendity paging during boot
replaced multiboot_init() by global pointer in entry.asm
Merge branch 'master' of github.com:RWTH-OS/eduOS into paging
added some preprocessor macros for upcoming paging code
added functions to handle TLB invalidation and control register access
added first version of paging code
(only page_map() works for now)
create self-reference directly in assembler .data section
removed unnecessary TLB flush
added missing targets to Makefile
simplified code, fixed smaller bugs
added first version of userspace fork/kill support to new branch
improved some targets of the Makefiles used for debugging and testing
fixed external declarations
removed userspace fork/kill support to separate branch
smaller cleanups