ARC: print numbers in hex, don't use 0x prefix if the number is in [0..9]

Fixes #306
Add r_bp_del_all (db-*) and fix some more bugs
Adding buffer accessors
Tweaking bin plugins so that they can check bytes along with a binfile and fixed extraneous * in buf.c and r_util.h
Fix some gcc warnings
Fix CID 1137867
Fix CID 1212095
Fix CID 1212088
Remove all MAKE_JOBS references
Fix CID 1212089 and simplify cmd_meta_lineinfo
Fix pe parser issues spotted by corkami tests
Fix CID 715926
Fix CID 1108515
Fix CID 1134669
Fix CID 1134848
Fix CID 1135016
Fix 8051 segfaults
Fix build
Fix memleaks in radiff2, segfaults in 8051 and aagraph
FIx #905 - assemble rdtsc and fix /c