Initial Travis CI integration with ASan
Minor coverity fixes
fix exports parsing
Fix PE exports parsing (adapted inisider patch) and some code cleanup
Sort eval vars when calling r_config_lock(). Useful for 'Ve'
Fix some clang warnings
Fix stale pointer issue in RBinELF. Add r_mem_dup
Refactor the new io-read-api (disabled by default)
Color in main help!
Add linux-arm64 reg profile, fix linux-arm systracing. Handle multiple syscall stoppers in 'dcs'
Fix build and some scary warnings in RCoreFile->fd
travis: split tests to multiple jobs / fail only on regressions
a few cleanups in bin and lang

* libr/bin/bin.c: remove duplicate condition (xtr && xtr)
* libr/bin/p/bin_elf.c!libs: use r_list_newf
* libr/lang/p/Makefile: add empty "clean" target to silence make warning
Refix 'dcs' and enhace '?' colorized help
Fix 'make dist'
Show warning when trying to disable the sandbox
Disable debugger commands in sandbox mode
Disable 'pwd' and 'ls' in sandbox mode
Show warning if sandbox enabled in '|' and fix the "funny" 'ls|less' bug
Fix empty graph calls nodes (exposes bug in xref analysis)