fix dump file issue
remove BASE_MB related code
Format x86 assembly constants in a yasm compatible manner

This is similar to what was done in a6463be0cc7 - yasm requires
these constants to have a zero after $.
Merge pull request #505 from mstorsjo/x86-asm-constants

Format x86 assembly constants in a yasm compatible manner
Merge pull request #490 from ruil2/encoder_slice_auto

fix dump file issue
Indent all WELS_ASM_FUNC_BEGIN properly

By having all of them start at the start of the line, the code
is more consistent and readable.
Merge pull request #509 from mstorsjo/fix-arm-asm-macro-indentation

Indent all WELS_ASM_FUNC_BEGIN properly
Merge pull request #510 from huili2/remove_basemb

remove BASE_MB related code
Merge remote-tracking branch 'upstream/master' into travis.osx