www/squid-devel: Update to 4.0.23, Fixes security vulnerabilities

• Add a patch from upstream that fixes a problem when building on i386 arch
  
  Kid.cc:93:42: error: format specifies type 'long' but the argument has type 'time_t' (aka 'int') [-Werror,-Wformat] theName.termedBuf(), pid, Config.hopelessKidRevivalDelay); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated.

• Remove CXXFLAGS with clang, not necessary anymore

PR: 225447
Submitted by: timp87@gmail.com (maintainer)
MFH: 2018Q1
Security: d5b6d151-1887-11e8-94f7-9c5c8e75236a