setting plausible default value for struct members

especially for unsigned members so they don't casted to max unsigned
Removed files that are neccessary only for standalone pecl branch
Merge branch 'PHP-5.5'

* PHP-5.5:
  Removed files that are neccessary only for standalone pecl branch
  setting plausible default value for struct members
Enabled O+ build by default (it may be disabled before 5.0.0 release)
Merge branch 'PHP-5.5'

* PHP-5.5:
  Enabled O+ build by default (it may be disabled before 5.0.0 release)