Use 5-arguments mul! in BILQ and QMR

[amontoison]

#353

[codecov]

Codecov Report

Merging #356 (00d84dc) into master (7e17494) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #356      +/-   ##
==========================================
- Coverage   97.69%   97.68%   -0.01%     
==========================================
  Files          32       32              
  Lines        4156     4148       -8     
==========================================
- Hits         4060     4052       -8     
  Misses         96       96              

Impacted Files	Coverage Δ
src/bilq.jl	100.00% <100.00%> (ø)
src/krylov_solvers.jl	100.00% <100.00%> (ø)
src/qmr.jl	100.00% <100.00%> (ø)

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[github-actions]

Package name	latest	stable
CaNNOLeS.jl
DCI.jl
JSOSolvers.jl
Percival.jl