Minor comments on messages

[Stéphane Raimbault]

I've spotted these minor comments during the French translation:

A space is missing between the sort and the long option.
#: src/pr.c:2837
msgid ""
"  -s[CHAR],--separator[=CHAR]\n"


This line doesn't use all the width space available (80 columns).
#: src/pr.c:2869
msgid ""
"\n"
"-t is implied if PAGE_LENGTH <= 10.  With no FILE, or when\n"
"FILE is -, read standard input.\n"


I could be convenient for translators to have a comment about the
translation of 'df'

All strings must have the same length as the original
#: src/df.c:151
msgid "Filesystem    Type"

All translations must end aligned on the original ones.
#: src/df.c:156
#, c-format
msgid "    Inodes   IUsed   IFree IUse%%"
msgstr "    Inodes   IUtil.  ILib. IUti%%"


Stéphane