Cherry-pick 7.11 changes to 8.2
Cherry-picked commits:
c64829b: Fallback to open if multifs_open fails.
2177073: Fix gdbserver process interruption.
b711aa8: Add Unix domain socket support to gdbserver 7.9.1.
35ee683: Remove gdb hack.
78af0f6: Handle cross compile for locale configuration
a7e49fd: bfd: add experimental support for SHT_RELR sections.
689b53d: Fix debugging of stripped PIE executables with padded PT_TLS
Fixed transport_is_reliable variable in b711aa8 so that it is consistent
with 8.2 changes.
Bug:62547070
Change-Id: I14a6b819cc0590dc11853dbce91111adfe2cb489
16 files changed
