Log Message:
Update qt4 to 4.8.7.

I am happy to announce release of Qt 4.8.7 today bringing over 150
improvements and bug fixes. Qt 4.8.7 provides important security
updates, better support for Mac OS X 10.10 and many requested error
corrections. As a patch release, it does not add new functionality
and maintains full compatibility with previous Qt 4.8.x releases.

Highlights of Qt 4.8.7 are:

    Security fix for DoS vulnerability in the BMP image handler
    (CVE-2015-0295) as well as security fixes for vulnerabilities
    in image handling of BMP (CVE-2015-1858), ICO (CVE-2015-1859)
    and GIF (CVE-2015-1860)
    Update 3rd party libpng to version 1.6.17 to address known
    vulnerabilities in previous version
    Update 3rd party libtiff to version 4.0.3 to address known
    vulnerabilities in previous version
    Better support for running Qt 4.8 applications on Mac OS X
    10.10 Yosemite
    Many customer requested bug fixes