Log Message:
Updated w3m to 0.5.3.0.20161031.

Switch from dead sourceforge original to debian-maintained github version.

* new features
 - support OSC 5379 remote imaging and sixel graphics
 - support SGR style mouse handler
 - support 32-bit color images
 - support FreeBSD framebuffer
 - support button element
 - support meta charset
 - add extbrowser4..9
 - add display_borders to display 0 pixel table borders
 - add siteconf feature
 - add German translation for options setting panel
 - add translations for de, zh_CN and zh_TW
* bug fixes
 - fix segfaults with malformed text
 - disable SSLv2 and SSLv3 by default [CVE-2014-3566]
 - set ssl_verify_server to 1 by default
 - disable RC4, export ciphers, and keys < 128 bits
 - use SSL_OP_NO_COMPRESSION due to "CRIME attack" [CVE-2012-4929]
 - use SSL_MODE_RELEASE_BUFFERS
 - disable USE_EGD for LibreSSL
 - appease gcc -Werror=format-security
 - option -s is now "squeeze multiple blank lines" to work as pager, and
   -j and -e are obsolete, so use -O{s|j|e} to specify display charset
 - accept single quoted meta refresh URL
 - assume "text" if a form input type is unknown
 - accept cookies by default
 - set use_dictcommand to 1 by default
 - set default_url to 1 by default
 - set argv_is_url to 1 by default
 - set alt_entity to 0 by default
 - fix build problems with Boehm GC 7.2, imlib2 1.4.6 and glibc 2.14
 - fix parallel make failure
 - fix incorrect ucs_ambwidth_map
 - and many fixes