stbgcc-8.3-1.0

Fix dirty git tag
Improve build system
Change build prefix to /opt/toolchains

stbgcc-8.3-0.4

Fix pthread_rwlock_timed*lock() compiler optimization bug
Build with docker centos-6.9 & gcc-6.3

stbgcc-8.3-0.3

Fix ld search path error when running 32 bit applications on 64 bit userspace
Minor build improvements

stbgcc-8.3-0.2

Bumped glibc 2.25 to 2.27
Straight Line Speculation hardening backports
Fix python exception when using gdb
Update broadcom.com urls
Modified arm64 lib folder structure