Bug#595260: salome: FTBFS in parallel: cleanup/doc-installation race

[Aaron M. Ucko]

Package: salome
Version: 5.1.3-10
Severity: serious
Justification: fails to build from source

The automatic build of salome on i386, which appears to have been in
parallel, ran into what looks like a race condition between cleaning
subtrees after building their contents and building and installing
documentation:

Here are some relevant excerpts from the log 
(https://buildd.debian.org/fetch.cgi?pkg=salome;ver=5.1.3-10;arch=i386;stamp=1283419999 ),
in order:

| GENERATING DEVELOPER DOCUMENTATION IN MODULE KERNEL_SRC_5.1.3

| Making clean in gui

| rm -fr KERNEL log.txt

| if test -d KERNEL; then \
|    /build/buildd-salome_5.1.3-10-i386-28Pdrv/salome-5.1.3/build-salome/KERNEL_SRC_5.1.3/local-install.sh -d /build/buildd-salome_5.1.3-10-i386-28Pdrv/salome-5.1.3/debian/salome-dev-doc/usr/share/doc/salome-doc/gui ; \
|    cp -rp KERNEL /build/buildd-salome_5.1.3-10-i386-28Pdrv/salome-5.1.3/debian/salome-dev-doc/usr/share/doc/salome-doc/gui ; \
|    fi;

| cp: cannot stat `KERNEL/classsalome__iapp_1_1SalomeOutsideGUI.html': No such file or directory
| cp: cannot stat `KERNEL/interfaceSALOME_1_1SenderInt.html': No such file or directory
[...]
| cp: `KERNEL': No such file or directoryrm -f *.lo
| 
| make[4]: *** [install-data-local] Error 1
| make[4]: Leaving directory
| `/build/buildd-salome_5.1.3-10-i386-28Pdrv/salome-5.1.3/build-salome/KERNEL_SRC_5.1.3/doc/salome/gui'
| make[3]: *** [install-am] Error 2

I see failures on several other architectures as well, quite possibly
due to the same issue (though I haven't actually checked); at any
rate, could you please address it?

Thanks!