typos spotted by lintian

doc/doxygen/chapters/501_environment_variables.doxy

@@ -1213,7 +1213,7 @@ StarPU for internal data structures during execution.
 \addindex __env__STARPU_BUS_STATS
 When defined, statistics about data transfers will be displayed when calling
 starpu_shutdown() (\ref Profiling). By default, statistics are printed
-on the standard error stream, use the environement variable \ref
+on the standard error stream, use the environment variable \ref
 STARPU_BUS_STATS_FILE to define another filename.
 </dd>
 
@@ -1233,7 +1233,7 @@ When defined, statistics about the workers will be displayed when calling
 starpu_shutdown() (\ref Profiling). When combined with the
 environment variable \ref STARPU_PROFILING, it displays the energy
 consumption (\ref Energy-basedScheduling).  By default, statistics are
-printed on the standard error stream, use the environement variable
+printed on the standard error stream, use the environment variable
 \ref STARPU_WORKER_STATS_FILE to define another filename.
 </dd>
 

src/core/perfmodel/perfmodel_history.c

@@ -1941,7 +1941,7 @@ void _starpu_update_perfmodel_history(struct _starpu_job *j, struct starpu_perfm
 					{
 						char archname[STR_SHORT_LENGTH];
 						starpu_perfmodel_get_arch_name(arch, archname, sizeof(archname), impl);
-						_STARPU_DISP("Too big deviation for model %s on %s: %fus vs average %fus, %u such errors against %u samples (%+f%%), flushing the performance model. Use the STARPU_HISTORY_MAX_ERROR environement variable to control the threshold (currently %d%%)\n", model->symbol, archname, measured, entry->mean, entry->nerror, entry->nsample, measured * 100. / entry->mean - 100, historymaxerror);
+						_STARPU_DISP("Too big deviation for model %s on %s: %fus vs average %fus, %u such errors against %u samples (%+f%%), flushing the performance model. Use the STARPU_HISTORY_MAX_ERROR environment variable to control the threshold (currently %d%%)\n", model->symbol, archname, measured, entry->mean, entry->nerror, entry->nsample, measured * 100. / entry->mean - 100, historymaxerror);
 						entry->sum = 0.0;
 						entry->sum2 = 0.0;
 						entry->nsample = 0;

src/datawizard/filters.c

@@ -561,7 +561,7 @@ void starpu_data_unpartition(starpu_data_handle_t root_handle, unsigned gatherin
 void starpu_data_partition(starpu_data_handle_t initial_handle, struct starpu_data_filter *f)
 {
 	unsigned nparts = _starpu_data_partition_nparts(initial_handle, f);
-	STARPU_ASSERT_MSG(initial_handle->nchildren == 0, "there should not be mutiple filters applied on the same data %p, futher filtering has to be done on children", initial_handle);
+	STARPU_ASSERT_MSG(initial_handle->nchildren == 0, "there should not be multiple filters applied on the same data %p, further filtering has to be done on children", initial_handle);
 	STARPU_ASSERT_MSG(initial_handle->nplans == 0, "partition planning and synchronous partitioning is not supported");
 
 	initial_handle->children = NULL;