8169209: Improved image post-processing steps
Reviewed-by: serb, vadim, mschoene

8166685: We should unpin stream and pixel buffer in case of setjmp during writeImage in JPEG.
Reviewed-by: prr, psadhukhan

8162461: Hang due to JNI up-call made whilst holding JNI critical lock.
Reviewed-by: prr, psadhukhan

4924727: reader.abort() method does not work when called inside imageStarted for PNG
Reviewed-by: prr, serb, bpb

8074827: Resolve disabled warnings for libjavajpeg
Reviewed-by: serb, psadhukhan

8162545: Mac build failure
Reviewed-by: psadhukhan, prr

8161733: [parfait] Memory leak in imageioJPEG.c:2803
Reviewed-by: prr, serb

8041501: ImageIO reader is not capable of reading JPEGs without JFIF header
Reviewed-by: prr, psadhukhan

8073699: Memory leak in jdk/src/java/desktop/share/native/libjavajpeg/imageioJPEG.c
Reviewed-by: bae, serb

8054834: Modular Source Code
Reviewed-by: alanb, chegar, ihse, mduigou
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, chris.hegarty@oracle.com, erik.joelsson@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, magnus.ihse.bursie@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, paul.sandoz@oracle.com