subversion 1.8.10_2: Add option --without-serf
subversion 1.8.10_2: Add option --without-serf

Linuxbrew/homebrew-core,LinuxbrewTestBot/homebrew-core,maxim-belkin/homebrew-core,Linuxbrew/homebrew-core,forevergenin/homebrew-core,rwhogg/homebrew-core,maxim-belkin/homebrew-core,LinuxbrewTestBot/homebrew-core,forevergenin/homebrew-core,rwhogg/homebrew-core