fixed compilation warnings from gcc 4.8.1

git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@12017 6c8e4198-a580-4521-a02f-c9ae86df1db9
Implemented AVX512 EXPAND/COMPRESS instructions
Fixed memory access size for AVX shift instructions with shift count in memory
Do not allow to encode with EVEX.b instructions which do not support implicit broadcast 
softfloat: prepare float32/64 to uint32 conversion functions

git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@12018 6c8e4198-a580-4521-a02f-c9ae86df1db9
fixed evex.b validation condition

git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@12019 6c8e4198-a580-4521-a02f-c9ae86df1db9