Do not use possessive «'s» after ‘s’ or ‘x’

debian/changelog

@@ -1906,7 +1906,7 @@ dpkg (1.15.0) experimental; urgency=low
     - Cleanup and split of header files.
 
   [ Raphaël Hertzog ]
-  * Enhance dpkg-shlibdeps's error message when a library can't be found to
+  * Enhance dpkg-shlibdeps' error message when a library can't be found to
     include the ELF format of the desired library. Closes: #474671
   * dpkg-gensymbols now refuses empty values for the the -v -P and -e
     parameters.
@@ -2717,7 +2717,7 @@ dpkg (1.14.16) unstable; urgency=low
     is used. That way we're consistent with the definition of that variable
     in deb-substvars(5). Closes: #433477
   * Add support of Dm-Upload-Allowed field. Closes: #453400
-  * Fix dpkg-shlibdeps's filtering of duplicated dependencies in fields of
+  * Fix dpkg-shlibdeps' filtering of duplicated dependencies in fields of
     lesser priority (when -d is used).
   * Fix behaviour of dpkg-shlibdeps when the same binary was passed multiple
     times for use in different dependency fields (-d option).

man/dpkg-shlibdeps.1

@@ -277,8 +277,8 @@ the RPATH of the binary, directories listed in /etc/ld.so.conf,
 directories listed in the LD_LIBRARY_PATH environment variable, and
 standard public directories (/lib, /usr/lib, /lib32, /usr/lib32, /lib64,
 /usr/lib64). Then it checks those directories in the package's build tree
-of the binary being analyzed, in the packages's build trees indicated with
-the \-S command-line option, in other packages's build trees that contains
+of the binary being analyzed, in the packages' build trees indicated with
+the \-S command-line option, in other packages' build trees that contains
 a DEBIAN/shlibs or DEBIAN/symbols file and finally in the root directory.
 If the library is not found in any of those directories, then you get this
 error.

utils/start-stop-daemon.c

@@ -116,7 +116,7 @@
 #endif
 
 #if defined(OSLinux)
-/* This comes from TASK_COMM_LEN defined in Linux's include/linux/sched.h. */
+/* This comes from TASK_COMM_LEN defined in Linux' include/linux/sched.h. */
 #define PROCESS_NAME_SIZE 15
 #elif defined(OSsunos)
 #define PROCESS_NAME_SIZE 15
@@ -416,7 +416,7 @@ usage(void)
 "  -a|--startas <pathname>       program to start (default is <executable>)\n"
 "  -r|--chroot <directory>       chroot to <directory> before starting\n"
 "  -d|--chdir <directory>        change to <directory> (default is /)\n"
-"  -N|--nicelevel <incr>         add incr to the process's nice level\n"
+"  -N|--nicelevel <incr>         add incr to the process' nice level\n"
 "  -P|--procsched <policy[:prio]>\n"
 "                                use <policy> with <prio> for the kernel\n"
 "                                  process scheduler (default prio is 0)\n"