[PATCH] Fix unchecked kmalloc()
fix bug in lib/list.c

in list, remove by value for the item at the end of the list doesn't
update the tail correctly
fix bug in lib/hashtable.c

in hash table, if multiple values inserted under the same key, increases
the number of items in the hash table
added boilderplate for file descriptors
Merge branch 'fork' into files
added system call files for open read write close
Merge branch 'fork'
added synch hashtable, tested coarsly
Merge branch 'synch_hashtable'
Merge branch 'master' of /projects/instr/14au/cse451/groups/l/os161
merged hasthtable from master
pid extended with function pidUsed to check whether a pid is used or not. waitpid implemented. bug in list if empty
Merge branch 'master' of /projects/instr/14au/cse451/os161
fixed syntax error
added file descriptor table to proc, started open
added file descriptor table to proc, started open
added kernel functions for IO
Merge branch 'master' of /projects/instr/14au/cse451/os161 into waitpid
implemented all IO syscalls - not yet tested
Merge branch 'master' into files