x11-toolkits/fox17: Update to 1.7.86

Changes:

• SEL_MOUSEWHEEL now bounced to target, similarly to other GUI events.
• New implementation of FXQuatf and FXQuatd setAxes() API. This one is singularity-free.
• New fastlerp() API in FXQuatf and FXQuatd implements trig-free quaternion interpolation.
• Improved pow() implementation in FXQuatf and FXQuatd.
• FOX Calculator fixes.
• Use argv[0] in adie as name of program in Registry. This means name of editor can be used to provide alternate configuration databases.
• FindInFiles shows file before reading it.
• FXPath now assumes user name may contain other characters in tilde- expansion.
• Missing fxstrcasestr() and fxstrstr() implementation added; needed for this and that.
• FXText draws control-characters differently now.
• FXString uncode escapes bug fix.

Bump PORTREVISION on consumers. Since this is a development version,
rebuild is required even for minor releases due to ABI incompatibility.