Log Message:
Update liboauth to 1.0.3

version 1.0.3
  - clarify documentation of oauth_curl
  - fix possible memleak in oauth_curl (only relevant if an error occurs)
  - fix TOCTOU in oauth_curl_post_file: the file may change between stat() and \ 
fopen()

version 1.0.2
  - fix typos in documentation
  - add xfree, xstrdup patch from Kedar Sovani
  - prepare repository migration to github
  - built-in sha1 support big&little endian
  - (no changes to the actual library API or ABI)

version 1.0.1
  - do not url-escape RSA-key for signature

version 1.0.0
  - fix body-hash example code
  - mark all oauth_http functions as deprecated
  - freeze interface definitions for good
  - enter maintenance/bug-fix only cycle

version 0.9.7
  - fixed tiny memory leak when oauth_curl_get() fails
  - fixed double-encoding of plaintext signature

version 0.9.6
  - fixed typo, do not print a separator before first parameter
        when serializing url for auth-header.

version 0.9.5
  - added "built-in" hmac-sha1 hashing (no RSA).
  - added some CURL options available via enviroment variables
  - fixed issue with decoding already encoded characters
    in the base-URL (not parameters).
    reported by L. Alberto Gimenez