mask mode resumes accurately without any loss of work.
fixed compiler error introduced in 4b0612750841044
Mask mode: Fix progress reporting.
Make it possible to build 64-bit "any" or MMX-only builds, for
testing purposes.

./configure CFLAGS="-m64 -mno-sse2" # only MMX
./configure CFLAGS="-m64 -mno-mmx"  # not even MMX
Split the PBKDF1 kernel for sha1crypt-opencl.