Pyenv

* pyenv: Prefer gawk over awk if both are available.
* python-build: Add new PyPy release; pypy-2.3, pypy-2.3-src (162)
* python-build: Add new Anaconda release; anaconda-1.9.2 (155)
* python-build: Add new Miniconda releases; miniconda-3.3.0, minoconda-3.4.2, miniconda3-3.3.0, miniconda3-3.4.2
* python-build: Add new Stackless releases; stackless-2.7.3, stackless-2.7.4, stackless-2.7.5, stackless-2.7.6, stackless-3.2.5, stackless-3.3.5 (164)
* python-build: Add IronPython versions (setuptools and pip will work); ironpython-2.7.4, ironpython-dev
* python-build: Add new Jython beta release; jython-2.7-beta2
* python-build: Update default setuptools version (3.4.1 -> 3.6)
* python-build: Update default pip version (1.5.4 -> 1.5.5)
* python-build: Update GNU Readline (6.2 -> 6.3)
* python-build: Import recent changes from ruby-build v20140420

* pyenv: Reads only the first word from version file. This is as same behavior as rbenv.
* python-build: Fix build of Tkinter with Tcl/Tk 8.6 (131)
* python-build: Fix build problem with Readline 6.3 (126, 131, 149, 152)
* python-build: Do not exit with errors even if some of modules are absent (131)
* python-build: MacOSX was misspelled as MaxOSX in `anaconda_architecture` (136)
* python-build: Use default `cc` as the C Compiler to build CPython (148, 150)
* python-build: Display value from `pypy_architecture` and `anaconda_architecture` on errors (pyenv/pyenv-virtualenv18)
* python-build: Remove old development version; 2.6-dev
* python-build: Update default setuptools version (3.3 -> 3.4.1)

* python-build: Add new CPython releases; 3.4.0 (133)
* python-build: Add new Anaconda releases; anaconda-1.9.0, anaconda-1.9.1
* python-build: Add new Miniconda releases; miniconda-3.0.4, miniconda-3.0.5, miniconda3-3.0.4, miniconda3-3.0.5
* python-build: Update default setuptools version (3.1 -> 3.3)

* python-build: Add new CPython releases; 3.3.5 (127)
* python-build: Add new CPython release candidates; 3.4.0rc1, 3.4.0rc2, 3.4.0rc3
* python-build: Update default setuptools version (2.2 -> 3.1)
* python-build: Update default pip version (1.5.2 -> 1.5.4)
* python-build: Import recent changes from ruby-build v20140225

* python-build: Add new CPython release candidates; 3.3.4, 3.4.0b3
* python-build: Add [Anaconda](https://store.continuum.io/cshop/anaconda/) and [Miniconda](http://repo.continuum.io/miniconda/) binary distributions
* python-build: Display error if the wget does not support Server Name Indication (SNI) to avoid SSL verification error when downloading from https://pypi.python.org. (60)
* python-build: Update default setuptools version (2.1 -> 2.2)
* python-build: Update default pip version (1.5.1 -> 1.5.2)
* python-build: Import recent changes from ruby-build v20140204

* pyenv: Always append the directory at the top of the `$PATH` to return proper value for `sys.executable` (98)
* pyenv: Unset `GREP_OPTIONS` to avoid issues of conflicting options (101)
* python-build: Install `pip` with using `ensurepip` if available
* python-build: Add support for framework installation (`--enable-framework`) of CPython (55, 99)
* python-build: Import recent changes from ruby-build v20140110.1
* python-build: Import `bats` tests from ruby-build v20140110.1