MFH: r372253

www/chromium:
- fix crash on startup on systems which do not have libexecinfo in base
  (typically 8.X and 9.X)
- conditionally bump PORTREVISION

PR:		ports/193610
Submitted by:	Rob Belics
Patch by:	Tomek
Approved by:	ports-secteam (rea)
MFH: r372581

Update to 38.0.2125.122 (bugfix release)

Changes:	https://chromium.googlesource.com/chromium/src/+log/38.0.2125.111..38.0.2125.122
Approved by:	ports-secteam (rea), delphij