manual: minor typos and formating fixes

In addition, the scripts listed in +LIBFOO_CONFIG_SCRIPTS+ are removed

from +$(TARGET_DIR)/usr/bin+, since they are not needed on the target.

Example 1:

.Config script: 'divine' package

================================

Package divine installs shell script '$(STAGING_DIR)/usr/bin/divine-config'.

So it's fixup would be:

So its fixup would be:

--------------------------------

DIVINE_CONFIG_SCRIPTS = divine-config

--------------------------------

================================

Example 2:

.Config script: 'imagemagick' package:

================================

Package imagemagick installs the following scripts:

'$(STAGING_DIR)/usr/bin/{Magick,Magick++,MagickCore,MagickWand,Wand}-config'

So it's fixup would be:

--------------------------------

IMAGEMAGICK_CONFIG_SCRIPTS = \

   Magick-config Magick++-config \

   MagickCore-config MagickWand-config Wand-config

--------------------------------

================================

On line 14, we specify the list of dependencies this package relies

on. These dependencies are listed in terms of lower-case package names,

 $ make help

--------------------

.Not all targets are always available,

Not all targets are always available,

some settings in the +.config+ file may hide some targets:

* +linux-menuconfig+ and +linux-savedefconfig+ only work when

  xref:requirement-optional[]).

- There is a known issue that you can't build it under Debian Squeeze.

.Reseting Buildroot for a new target:

To delete all build products as well as the configuration:

--------------------

 $ make distclean

--------------------

Note that if +ccache+ is enabled, running +make clean+ or +distclean+ does

.Notes

If +ccache+ is enabled, running +make clean+ or +distclean+ does

not empty the compiler cache used by Buildroot. To delete it, refer

to xref:ccache[].