[Gemfile] Use resolver branch of Core

Use new Dependency#prerelease? method

Gemfile

@@ -12,7 +12,7 @@ gemspec
 
 group :development do
   cp_gem 'claide',               'CLAide'
-  cp_gem 'cocoapods-core',       'Core'
+  cp_gem 'cocoapods-core',       'Core', 'resolver'
   cp_gem 'cocoapods-downloader', 'cocoapods-downloader'
   cp_gem 'cocoapods-plugins',    'cocoapods-plugins'
   cp_gem 'cocoapods-trunk',      'cocoapods-trunk'

Gemfile.lock

@@ -7,8 +7,8 @@ GIT
 
 GIT
   remote: https://github.com/CocoaPods/Core.git
-  revision: 99748b5b9fa8fe6541218f1752c0379589c7a6ee
-  branch: master
+  revision: 78b395571a54d34ba9cb220349dc75b066e80cd1
+  branch: resolver
   specs:
     cocoapods-core (0.34.4)
       activesupport (>= 3.2.15)

lib/cocoapods/resolver.rb

@@ -107,15 +107,10 @@ module Pod
     def search_for(dependency)
       @search ||= {}
       @search[dependency] ||= begin
-        prerelease_requirement = dependency.
-          requirement.
-          requirements.
-          any? { |r| Version.new(r[1].version).prerelease? }
-
         find_cached_set(dependency).
           all_specifications.
           select { |s| dependency.requirement.satisfied_by? Version.new(s.version) }.
-          reject { |s| !prerelease_requirement && s.version.prerelease? }.
+          reject { |s| !dependency.prerelease? && s.version.prerelease? }.
           reverse.
           map { |s| s.subspec_by_name dependency.name rescue nil }.
           compact.

master @ b0f4e857

-Subproject commit b6e1c2429964b4e47b344958572930e15ffbbcea
+Subproject commit b0f4e85738f1f911e32e2914b39e9acdce7c7ed9