Create select_where.c
Create select_where.h
Merge branch 'jingo' into chingfan

Conflicts:
	src/select_where.c
Create equijoins.h
Create equijoins.c
Create where.h
Create where.c
Update select_where.c
prepared to add equijoins
Merge remote-tracking branch 'origin/jingo' into chingfan

Conflicts:
	src/select_where.c
	src/where.c
	src/where.h