Fix depends for rpms

[djnym]

This fixes the way dependencies are set in RPMs. It seems like the previous changes actually broke something and left 2 places where dependencies were dealt with and that lead to depends being broken. Here's an example (using the same test package from the previous PR).

> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
/bin/sh
> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 --depends 'zlib > 1.2' --depends 'zlib-devel > 1.2' tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
zlib-devel >
zlib > 1.2
> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 --depends 'zlib > 1.2' --depends 'zlib-devel > 1.2' --depends foo tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
foo
zlib-devel > 1.2
zlib > 1.2

notice how sometimes the version is missing and that /bin/sh is not included in them all (even though it is supposed to be).

Here's the same commands with the fix.

> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
/bin/sh
> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 --depends 'zlib > 1.2' --depends 'zlib-devel > 1.2' tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
/bin/sh
zlib > 1.2
zlib-devel > 1.2
> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 --depends 'zlib > 1.2' --depends 'zlib-devel > 1.2' --depends 'foo' tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
/bin/sh
zlib > 1.2
zlib-devel > 1.2
foo

In this case all the dependencies seem to be correct.

[djnym]

Same suse setup, the commands from above with master

> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
/bin/sh
> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 --depends 'libz1 > 1.2' --depends 'zlib-devel > 1.2' tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
zlib-devel >
libz1 > 1.2
> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 --depends 'libz1 > 1.2' --depends 'zlib-devel > 1.2' --depends 'foo' tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
foo
zlib-devel > 1.2
libz1 > 1.2

So same behavior, now with the patch.

> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
/bin/sh
> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 --depends 'libz1 > 1.2' --depends 'zlib-devel > 1.2' tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
/bin/sh
libz1 > 1.2
zlib-devel > 1.2
> ../epm.erl -f -t rpm -n test -v 1.1.0 -a x86_64 --depends 'libz1 > 1.2' --depends 'zlib-devel > 1.2' --depends 'foo' tmp etc
> rpm -qp --requires test-1.1.0-1.x86_64.rpm
/bin/sh
libz1 > 1.2
zlib-devel > 1.2
foo

And trying to install the one with 'foo' results in

> sudo rpm -i test-1.1.0-1.x86_64.rpm
error: Failed dependencies:
        foo is needed by test-1.1.0-1.x86_64

But installing the one without (but with the zlib deps, works as expected)

> sudo rpm -i test-1.1.0-1.x86_64.rpm
>
> sudo rpm -e test zlib-devel
> sudo rpm -i test-1.1.0-1.x86_64.rpm
error: Failed dependencies:
        zlib-devel > 1.2 is needed by test-1.1.0-1.x86_64
> sudo zypper install zlib-devel
Loading repository data...
Reading installed packages...
Resolving package dependencies...

The following NEW package is going to be installed:
  zlib-devel

1 new package to install.
Overall download size: 106.6 KiB. Already cached: 0 B. After the operation,
additional 374.1 KiB will be used.
Continue? [y/n/? shows all options] (y): y
Retrieving package zlib-devel-1.2.8-10.1.x86_64
                                       (1/1), 106.6 KiB (374.1 KiB unpacked)
Retrieving: zlib-devel-1.2.8-10.1.x86_64.rpm .........................[done]
Checking for file conflicts: .........................................[done]
(1/1) Installing: zlib-devel-1.2.8-10.1.x86_64 .......................[done]
> sudo rpm -i test-1.1.0-1.x86_64.rpm
> echo $?
0