[lldb] Allow SymbolTable regex search functions to match mangled name

It may be useful to search symbol table entries by mangled instead
of demangled names. Add this optional functionality in the SymbolTable
functions.

Differential Revision: https://reviews.llvm.org/D130803

GitOrigin-RevId: 3aef968ec3faada22319aaa3530776974082d2d5
8 files changed