mcrypt: get the value of LD_LIBRARY_PATH explicitly
mcrypt: get the value of LD_LIBRARY_PATH explicitly

Former-commit-id: fb4e880b88f49914b0b80c385542f11ac1a09291
Former-commit-id: afad2b3c2569c24925a03481978101fcd616b340 [formerly 5e93e046e8eb62333b825fa2065742c37d908928] [formerly 5e7b69aaf7f4ae586c5d905cef1f792fa5cff3fb [formerly 3b84774847e245427869a88cc943500e79cf56b2]]
Former-commit-id: 2d03eb1d38503b8ab61ab10ab5ce6b123e07bab4 [formerly 97dd5a9f698e5d4d27ba1fd2f2fbec91b49bc931]
Former-commit-id: 9b2f150fd231205a6397ffa5ff4d0d9a426c07b8
PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild