py2-pycurl: make sure link-time ssl backend and compile-time match

Bump version to 7.43.0.

Add missing dependency on OpenSSL (pycurl includes headers if OpenSSL is
selected as backend).

We have noticed the following issue in GCC 5.3.0 branch:

    import pycurl
    ImportError: pycurl: libcurl link-time ssl backend (openssl) is
    different from compile-time ssl backend (none/other)

At compile time pycurl hardcoded the backend it's using:

    src/pycurl.h:#   define COMPILE_SSL_LIB "openssl"
    src/pycurl.h:#   define COMPILE_SSL_LIB "gnutls"
    src/pycurl.h:#   define COMPILE_SSL_LIB "nss"
    src/pycurl.h:#  define COMPILE_SSL_LIB "none/other"
    src/pycurl.h:# define COMPILE_SSL_LIB "none/other"

Then at run-time it queries cURL for fetures/configuration to check if
link-time [run-time] and compile-time SSL backends match. In our case it
didn't manage to figure SSL backend at compile-time.

We explicitly select that we are using OpenSSL.

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>

py2-pycurl.spec

@@ -1,16 +1,15 @@
-### RPM external py2-pycurl 7.19.3.1
-## INITENV +PATH PYTHONPATH %i/$PYTHON_LIB_SITE_PACKAGES
-Source: http://pycurl.sourceforge.net/download/pycurl-%realversion.tar.gz
-Requires: python curl
+### RPM external py2-pycurl 7.43.0
+## INITENV +PATH PYTHONPATH %{i}/$PYTHON_LIB_SITE_PACKAGES
+Source: https://dl.bintray.com/pycurl/pycurl/pycurl-%{realversion}.tar.gz
+Requires: python curl openssl
 
 %prep
-%setup -n pycurl-%realversion
+%setup -n pycurl-%{realversion}
 
 %build
-python setup.py build
+python setup.py --with-openssl build
 
 %install
-python setup.py install --prefix=%i
-find %i -name '*.egg-info' -exec rm {} \;
-# Remove documentation.
-%define drop_files %i/share
+python setup.py --with-openssl install --prefix=%{i}
+find %{i}/${PYTHON_LIB_SITE_PACKAGES} -name '*.egg-info' -print0 | xargs -0 rm -rf
+rm -rf %{i}/share