Revert "Comment out unused mwrapper functions for now"

This reverts commit 5b2706338271f07267f986c06497ffef59f925bb.
Revert "Put in functions to read entire file into memory"

This reverts commit 411e3f3edc32a84dfe978ca9a8cf0d0078e81419.
Revert "Add mwrapper.cpp to JNI Makefile as well"

This reverts commit 214733f6ef86335ede6b7c8589cd014e55377ebf.
Revert "Split up memwrap functions to mwrapper.cpp"

This reverts commit 0561251920d8d2071f2014e71b379bf709bfba8b.