New comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/27130#issuecomment-744271947

Comment:
The error says:
```
/void-packages/common/xbps-src/shutils/common.sh: line 31: cd: /builddir/ffcast-2.5.0: No such file or directory
=> ERROR: ffcast-2.5.0_1: cannot access wrksrc directory [/builddir/ffcast-2.5.0]
```
when we try looking inside this directory:
```
$ ls masterdir/builddir
FFcast-2.5.0
```
we can see there is no ffcast-2.5.0 directory, there is only **FF**cast-2.5.0. This means we need to tell the build-system to use it. Add `wrksrc=FFcast-${version}`.
The next problem is that you are using command `bootstrap` and `configure`. These are not executables installed in `$PATH`, they are executable files in the current directory which means you have to run them as the README suggests - `./bootstrap` and `./configure`. Now the package should build, but the template is not ideal.

There is no reason to install README.asciidoc, because it only has information about compiling the package.

./configure and make in do_build and make install in do_install is quite common, so we can add `build_style=gnu-configure` which will add basically:
```
do_configure() {
    ./configure with the correct flags
}
do_build() {
    make
}
do_install() {
    make install
}
```
We need to make sure we don't rewrite the functions do_build and do_install that build_style provided to us, so we need to move the one remaining command - `./bootstrap` we need to run **before** do_configure to pre_configure.

The last issue I see is that makedepends should be renamed to hostmakedepends.