complibs/cloog: fix linking with libm

In Ubuntu 11.04 and 11.10, the default options for ld have changed.
--no-copy-dt-needed-entries and --as-needed are now enabled by default, which
causes errors like:

[EXTRA] Checking CLooG/ppl
[DEBUG] ==> Executing: 'make' '-j3' '-s' 'check'
[ALL ] Making check in .
[ALL ] config.status: creating include/cloog/cloog-config.h
[ALL ] config.status: include/cloog/cloog-config.h is unchanged
[ALL ] libtool: link: i686-build_pc-linux-gnu-gcc -Wall -fomit-frame-pointer
-pipe -o cloog cloog.o -L/<snip>/build/static/lib ./.libs/libcloog.a -lm
/<snip>/build/static/lib/libppl_c.a /<snip>/build/static/lib/libpwl.a
/<snip>/build/static/lib/libppl.a /<snip>/build/static/lib/libgmpxx.a
/<snip>/build/static/lib/libgmp.a -lstdc++
[ALL ] /usr/bin/ld: /<snip>/build/static/lib/libppl.a(MIP_Problem.o):
undefined reference to symbol 'sqrt@@GLIBC_2.0'
[ALL ] /usr/bin/ld: note: 'sqrt@@GLIBC_2.0' is defined in DSO
/usr/lib/gcc/i686-linux-gnu/4.6.1/../../../i386-linux-gnu/libm.so so try adding
it to the linker command line
[ALL ] /usr/lib/gcc/i686-linux-gnu/4.6.1/../../../i386-linux-gnu/libm.so:
could not read symbols: Invalid operation
[ALL ] collect2: ld returned 1 exit status
[ERROR] make[2]: *** [cloog] Error 1
[ERROR] make[1]: *** [check-recursive] Error 1

See:
https://wiki.ubuntu.com/NattyNarwhal/ToolchainTransition

This patch fixes these errors by placing '-lm' at the right place on the command
line as libppl requires libm when linking cloog.

Signed-off-by: "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>

 Patch from upstream:

 http://strace.cvs.sourceforge.net/viewvc/strace/strace/linux/arm/syscallent.h?r1=1.17&r2=1.18&sortby=file

 2008-11-13  Kirill A. Shutemov  <kirill@shutemov.name>

     * linux/arm/syscallent.h: Fix build on ARM EABI which does not

     provide syscalls socketcall and ipc.

 --- strace-4.5.18.orig/linux/arm/syscallent.h	2008/12/29 20:04:15	1.17

 +++ strace-4.5.18/linux/arm/syscallent.h	2009/01/01 23:20:38	1.18

 @@ -431,6 +431,7 @@

  	{ 5,	0,	printargs,		"SYS_398"	}, /* 398 */

  	{ 5,	0,	printargs,		"SYS_399"	}, /* 399 */

 +#ifndef __ARM_EABI__

  #if SYS_socket_subcall != 400

   #error fix me

  #endif

 @@ -481,3 +482,4 @@

  	{ 4,	TI,	sys_shmdt,		"shmdt"		}, /* 440 */

  	{ 4,	TI,	sys_shmget,		"shmget"	}, /* 441 */

  	{ 4,	TI,	sys_shmctl,		"shmctl"	}, /* 442 */

 +#endif