Update libjpeg-turbo to 1.2.

README

Index: README
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--- README	(revision 111873)
+++ README	(working copy)
@@ -62,7 +62,7 @@
 This package contains C software to implement JPEG image encoding, decoding,
 and transcoding.  JPEG (pronounced "jay-peg") is a standardized compression
 method for full-color and gray-scale images.  JPEG's strong suit is compressing
-photographic images or other types of images which have smooth color and
+photographic images or other types of images that have smooth color and
 brightness transitions between neighboring pixels.  Images with sharp lines or
 other abrupt features may not compress well with JPEG, and a higher JPEG
 quality may have to be used to avoid visible compression artifacts with such
@@ -274,7 +274,7 @@
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 The ISO JPEG standards committee actually promotes different formats like
-"JPEG 2000" or "JPEG XR" which are incompatible with original DCT-based
+"JPEG 2000" or "JPEG XR", which are incompatible with original DCT-based
 JPEG.  IJG therefore does not support these formats (see REFERENCES).  Indeed,
 one of the original reasons for developing this free software was to help
 force convergence on common, interoperable format standards for JPEG files.