[MC] Set defaults based on section names and support name suffixes

Set correct default flags and section type based on its name for .text,
.data, .bss, .init_array, .fini_array, .preinit_array, .tdata, and .tbss
and support section name suffixes for .data.*, .rodata.*, .text.*,
.bss.*, .tdata.* and .tbss.* which matches the behavior of GAS.

Fixes PR31888.

Differential Revision: https://reviews.llvm.org/D30229

llvm-svn: 299484